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Ex-dividend dates by calendar month: three-year average, quarterly vs monthly payers

Answered against 22 years of US equities and 12 years of US options data and published with the query that produced it. This result is stored as of 2026-08-25, from Upcoming Ex-Dividend Dates: Stocks This Week.

as of series 12×4read in context →
Ex-dividend dates by calendar month: three-year average, quarterly vs monthly payers — 12 rows by 4 columns, computed from US exchange, SIP and OPRA data.
monthex_dates_per_yearquarterly_payersmonthly_payers
01 Jan20435171024
02 Feb31089861559
03 Mar560526591541
04 Apr33346351596
05 May424111591619
06 Jun579226401612
07 Jul31946681661
08 Aug345112341471
09 Sep497323961448
10 Oct27026601511
11 Nov337011981521
12 Dec638025831951
Rows × columns
12 × 4
Period covered
to
Computed
Completeness
No missing values
Source
US exchange, SIP and OPRA market data
Licence
Strasmore terms · free, no signup
Formats
JSON · CSV · the SQL below

What each column holds

Column definitions for Ex-dividend dates by calendar month: three-year average, quarterly vs monthly payers, derived from the stored result.
ColumnTypeRangeNotes
month date 01 Jan to 12 Dec
ex_dates_per_year number 2,043 to 6,380
quarterly_payers number 517 to 2,659
monthly_payers number 1,024 to 1,951

Computed from Strasmore's warehouse of US exchange, SIP and OPRA market data. Equity prices are delayed; options greeks and implied volatility are end-of-day. This result is stored, not recomputed on load — it is exactly the numbers that were returned on , and the query below is what returned them.

the exact SQL behind every number 
SELECT multiIf(toMonth(ex_dividend_date) = 1, '01 Jan', toMonth(ex_dividend_date) = 2, '02 Feb', toMonth(ex_dividend_date) = 3, '03 Mar',
               toMonth(ex_dividend_date) = 4, '04 Apr', toMonth(ex_dividend_date) = 5, '05 May', toMonth(ex_dividend_date) = 6, '06 Jun',
               toMonth(ex_dividend_date) = 7, '07 Jul', toMonth(ex_dividend_date) = 8, '08 Aug', toMonth(ex_dividend_date) = 9, '09 Sep',
               toMonth(ex_dividend_date) = 10, '10 Oct', toMonth(ex_dividend_date) = 11, '11 Nov', '12 Dec') AS month,
       round(count() / 3.0) AS ex_dates_per_year,
       round(countIf(frequency = 4) / 3.0) AS quarterly_payers,
       round(countIf(frequency = 12) / 3.0) AS monthly_payers
FROM global_markets.stocks_dividends
WHERE ex_dividend_date >= toStartOfMonth(today()) - INTERVAL 36 MONTH
  AND ex_dividend_date < toStartOfMonth(today())
  AND cash_amount > 0
GROUP BY month
ORDER BY month

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